Die struck意思
"Die struck" is a term used in the context of metalworking, particularly in the production of coins, medals, and other metal objects. It refers to the process of using a die to strike or imprint a design onto a metal blank or planchet.
Here's a brief overview of the die-striking process:
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Die Creation: First, a design is engraved onto a steel die. The design is inverted so that it will be struck correctly onto the metal object.
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Metal Preparation: A blank of the desired metal, such as copper, silver, or gold, is prepared. This blank is typically round and flat, called a planchet.
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Striking: The planchet is placed between the die and a metal anvil. The die is then struck with a hammer or press, which forces the design onto the surface of the planchet. The pressure from the strike causes the metal to flow and take the shape of the die's design.
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Final Touches: After the strike, the newly minted coin or medal may undergo additional processes such as annealing (heating and cooling to reduce stress), edging (adding a rim), and inspecting for quality.
Die-struck items are known for their high quality and detail. The process allows for very fine details to be reproduced on the metal surface, and it can also create a raised or relief design on one or both sides of the coin or medal.
In the context of numismatics (the study or collection of currency), "die struck" is often used to describe coins that have been produced using this traditional method, which is in contrast to modern minting techniques that may involve less labor-intensive methods like die casting or electroplating.